Originally Posted by malmental
funny, I was coming back to correct myself..
Multi-GPU Support Supports NVIDIA® 3-Way SLI™ Technology
Supports NVIDIA® SLI™ Technology
Supports AMD Quad-GPU CrossFireX™ Technology
Supports AMD CrossFireX™ Technology
CUDA Core CUDA support:
Up to 4 NVIDIA Tesla GPUs
Expansion Slots 2 x PCIe 2.0 x16 (x16, x8)
2 x PCIe 2.0 x16 (x8 mode)
3 x PCIe 2.0 x1compromise and say it's x16/x8 for the SLi
Not sure what's going on here but two slot config runs x16/x16 pcie 2.0. Four slots filled is x8/x8/x8/x8. 3 slots filled is x16/x/8/x8. Nvidia drivers are limited to trisli, it's a software thing and not hardware. Anyways, any of the nf200 z68/p67 boards can do x16/x16. However, running only two cards, you'd be hard pressed to saturate the lanes.
OP there was never a quadfire board made on z68. Latencies are overblown on nf200 and
the NF200 adds extra latency and the performance of 2x16 is worse than 2x8
is just all wrong.
If the OP is looking to go quad, skip z77 (G1 Sniper 3 or p8z77 ws) and get a x79 ud3/x79 formula/x79 RIVE with a 3820. That way you get 40 lanes off the cpu without having to resort to using a multiplexer like the PEX8727, never mind that it's an awesome bridge chip in itself. Regardless the PEX8747 in the z77 quad boards are a bridge and not off the cpu like the x79 boards. +1 for the x79 boards obviously.Edited by tsm106 - 5/25/12 at 11:38pm